When purchasing foam aluminum sound-absorbing panels, we need to know the following:

1. Check whether the foam aluminum sound-absorbing board has a performance test report

In theory, any material has sound insulation properties, and even a thin piece of printing paper can provide sound insulation. Therefore, many very common materials in the market are referred to as sound-absorbing boards by manufacturers, including gypsum boards, magnesium boards, calcium silicate boards, and wooden boards, which makes consumers easily deceived. One of the important principles for choosing a sound-absorbing board is whether there is an authoritative test report for the sound-absorbing board. China's most authoritative wall sound insulation test report units include the Institute of Architectural acoustics of Tsinghua University and Tongji University.

Many manufacturers in the market are promoting the performance of their sound-absorbing panels, but they cannot provide authoritative test reports to prove this. All sound-absorbing panels and sound insulation coatings have been tested in Tsinghua University and Tongji University, and official test reports have been released to show the sound insulation effect of the wall composed of sound-absorbing panels. If the sound-absorbing board discloses how good its sound insulation performance is, but cannot provide a formal test report, consumers will definitely worry. Secondly, pay attention to whether the sound-absorbing board sold by the manufacturer is the same product as the sample submitted for inspection. If the samples submitted for inspection are thickened, weighed, made of different materials, or specially treated, and the actual sold samples are different products, it is obvious that the sold products will not achieve the sound insulation values shown in the test report. In this regard, consumers should pay attention to distinguishing the qualifications, reputation, and goodwill of manufacturers, and try to avoid being deceived.

2. Check whether the installation of foam aluminum sound-absorbing board is simple

In order to achieve good sound insulation effect, the installation method of the sound-absorbing board must be very simple, otherwise it is difficult to achieve the ideal sound insulation effect. If a wall can provide sound insulation of X dB in the laboratory, then in practical engineering, it can only provide sound insulation of X-2 dB or even lower. There are two main reasons why the sound insulation value of walls in actual engineering is lower than the laboratory test value: including the transverse sound propagation problem in actual engineering, and the installation quality of wall panels in actual engineering is lower than that of laboratory professionals. Therefore, the installation of sound-absorbing panels must be simple, otherwise on-site installation personnel will make mistakes, resulting in the wall's sound insulation value not meeting the sound insulation target. For example, elastic crossbars were widely used in the United States in the past, which itself was a good sound insulation method and product. The use of elastic horizontal rods in the laboratory can improve the sound insulation effect of lightweight gypsum board walls by 5-10dB. However, in practical engineering, installation personnel often cannot accurately install the board on an elastic horizontal rod, so the improvement of the actual sound insulation effect of the wall is very limited. Foam aluminum sound-absorbing board

3. Check the thickness and weight of foam aluminum sound-absorbing board

There are some common sound-absorbing boards in the market. To improve the sound insulation effect, it can be achieved by increasing the thickness and weight of the wall panel. Although this method can improve the sound insulation effect to a certain extent, it brings many drawbacks:

1) The sound insulation efficiency (that is, the improvement of sound insulation) is low, because according to the Physical law, in theory, the surface density of the panel is twice the original, and the isolation capacity can only be increased by 6dB for many; The surface density of the wall panel has increased four times, and the sound insulation can only increase by 12dB.

2) The thicker the wall panel, the more space it occupies and the more valuable living space people lose. Foam aluminum sound-absorbing board

3) The heavier the wall panel, the more difficult it is to install; In addition, the wall panel is too heavy, so we need to consider whether the floor can withstand it.

4) The thicker and heavier the wall panel, the more raw materials used to produce it, the higher the price of the wall panel, the higher the installation cost, the higher the value of the lost living space, and the higher the overall cost of the project. Foam aluminum sound-absorbing board is a sound insulation material based on a new sound insulation principle. The significant improvement in its sound insulation effect is not achieved by increasing weight and thickness.